Truevision Elexsys 6A Avid card

I was given a Truevision Elexsys 6A Avid card. I know nothing about it and am having trouble finding more info. I tested it in a G3 and it works as far as graphics goes...looks good. I do not use Avid, so I have no way to test it further.
I am curious about the card. Is it worth anything? If not, would it make a decent graphics card ...lets say ...compared to the rage128 that is in my G3? I have no idea how to find out how much memory it has ...or anything else about it for that matter.